Hair roller



FIG. 1 is a perspective view of the hair roller in accordance with the principles of the present disclosure;

FIG. 2 is a right side elevation view of the hair roller of FIG. 1, the left side elevation view being a mirror image thereof;

FIG. 3 is a top plan view of the hair roller of FIG. 1; and,

FIG. 4 is a bottom plan view of the hair roller of FIG. 1. 

CLAIM The ornamental design for a hair roller, as shown and described. 